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2. Computation of solar spectral irradiance;Venkatesh,1982
3. Solar energy outside the earth's atmosphere;Thekaekara;Solar Energy,1973
4. Handbook of Geophysics and Space Environments;Valley,1975
5. Models of the aerosols of the lower atmosphere and the effects of humidity variations on their optical properties;Shettle;Report AFGL-TR-79-0214,1979